The hydrology community is introduced as advanced in developing and adopting a set of common approaches and procedures in applying Geographical Information System (GIS) to water modeling. Strassberg (chief architect, Arc Hydro Groundwater data model), along with NL Jones (Environmental Modeling Research Laboratory, Brigham Young U.) and Maidment (Center for Research in Water Resources, U. of Texas at Austin), explain the framework, processes, and applications of the Arc Hydro groundwater data model, a set of evolving information models and tools for devising and analyzing geologic maps and related applications using GIS. The text includes many color illustrations, screen shots, web resources, and a glossary. Annotation ©2011 Book News, Inc., Portland, OR (booknews.com)